SMTP Senpai

SMTP Senpai

MailSenpai
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About

Ha Tang is a customer support, email and payments platform for Vietnamese businesses and software teams. Its shared inbox brings together Zalo (Official Account and personal), Facebook Messenger, Instagram, TikTok, WhatsApp, email and live chat on websites and in mobile apps. An AI assistant answers from company knowledge, follows situation rules, drafts orders and hands conversations to human agents. The platform matches VietQR bank transfers to orders and issues e-invoices when orders are paid. Its email module supports transactional delivery through a REST API and SMTP, verified domains, inbound email and team groups. Developers can use REST APIs, webhooks, SDKs for Node, Flutter, iOS and Android, and an MCP server. Agents work from a web dashboard and native iOS, Android and macOS apps.

About

SMTP Senpai is MailSenpai's EU-hosted SMTP relay and REST email API for password resets, order confirmations, notifications and website forms. Connect via SMTP on port 2525 or 587 with STARTTLS, the REST API, or a form endpoint for static sites. DKIM signing uses your verified sender domain, with SPF/DKIM/DMARC checks and automatic suppression of bounced addresses. The permanent free plan includes 5,000 emails per calendar month, up to 200 per day and 30 in the preceding hour, one verified sender domain and 7-day sending logs. No card or expiry. Paid annual plans start at EUR 12.90 per month plus VAT for 10,000 emails per month and 90-day logs. An email report is sent weekly on Monday. Official WordPress and Drupal plugins and open-source SDKs support integration. Written support is available in English and Italian. MailSenpai is the separate newsletter and email marketing platform.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Vietnamese online shops, SMBs and app or SaaS teams that sell and support customers on Zalo, Facebook, their website and their own app.

Audience

Developers, SaaS and app makers, web agencies and small businesses that need reliable transactional email

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

690,000 VND/month
Free Version Supported
Free Trial Supported

Pricing

Free
Permanent free plan: 5,000 emails per calendar month, up to 200 per day and 30 in the preceding hour; one verified sender domain; 7-day sending logs; no card or expiry. Paid annual plans start at EUR 12.90/month plus VAT for 10,000 emails/month, with 90-day sending logs. The free plan does not automatically become a paid subscription.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Ha Tang
Founded: 2026
Vietnam
hatang.dev

Company Information

MailSenpai
Founded: 2016
Italy
en.mailsenpai.com/smtp-senpai/

Alternatives

No Alternatives

Alternatives

SMTP.com

SMTP.com

Ziff Davis
1.0 out of 5 stars
turboSMTP

turboSMTP

3.3 out of 5 stars
SendGrid

SendGrid

Twilio SendGrid
3.9 out of 5 stars

Categories

Categories

Email APIs Supported
SMTP Supported

Transactional Email Features

A/B Testing Not Supported
Contact Database Not Supported
Dynamic Content Not Supported
Email Monitoring Supported
Mailing List Management Not Supported
Reporting/Analytics Supported
Spam Check Not Supported
Template Management Not Supported

Integrations

Django Not Supported
Laravel Not Supported
Magento Not Supported
Node.js Not Supported
PrestaShop Not Supported
Supabase Not Supported
WooCommerce Not Supported
WordPress Not Supported
n8n Not Supported

Integrations

Django Supported
Laravel Supported
Magento Supported
Node.js Supported
PrestaShop Supported
Supabase Supported
WooCommerce Supported
WordPress Supported
n8n Supported
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Claim Ha Tang and update features and information
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